Welcome! Here are the website rules, as well as some tips for using this forum.
Tempstar furnace won't turn on
Circuit board problem. Furnace every few weeks wont turn on, i can get it to turn on by unplugging, plugging back in the main connector plug on the control board. Board is Honeywell ST9162A
When i unplug it, i think i hear a relay click, which tells me a relay is sticking. Worth replacing the relays? I tried replacing the whole board but i used a used board and am still having same problem.
Any help would be great!